10PA005, original
Common round pushbutton switch that's used for Test/Service/Degauss switch in many Japanese Bemani games. Note that the Korean counterparts use a square pushbutton that is quite different mechanically.
Marking on the back is the Mountain Switch logo with the part number DS-412, but Mountain Switch's current part number for the red cap used in Bemani games is 10PA005.
No known hardware uses this part.
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